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Apache Thrift CVE-2026-41608

| EUVDEUVD-2026-49145 HIGH
Improper Handling of Highly Compressed Data (Data Amplification) (CWE-409)
2026-07-24 GHSA-6pjx-3pjc-mrj8
Python Apache Information Disclosure Red Hat Suse Thrift
7.5
CVSS 3.1 · NVD
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Severity by source

NVD PRIMARY
7.5 HIGH
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
vuln.today AI
7.5 HIGH

Remote, low complexity, no privileges; unbounded decompression causes high availability impact.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
SUSE
HIGH
qualitative
Red Hat
7.5 HIGH
qualitative

Primary rating from NVD.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

Lifecycle Timeline

5
Re-analysis Queued
Jul 27, 2026 - 20:07 vuln.today
cvss_changed
CVSS changed
Jul 27, 2026 - 20:07 NVD
7.5 (HIGH)
Patch available
Jul 27, 2026 - 12:16 EUVD
Analysis Generated
Jul 26, 2026 - 12:06 vuln.today
CVE Published
Jul 24, 2026 - 22:26 oss-security
CRITICAL

Blast Radius

ecosystem impact
† from your stack dependencies † transitive graph · vuln.today resolves 4-path depth
  • 463 pypi packages depend on thrift (134 direct, 336 indirect)

Ecosystem-wide dependent count for version 0.24.0.

Description PRE-NVD

Disclosed via oss-security. NVD scoring and full description are pending.

AnalysisAI

Denial of service in Apache Thrift 0.x before 0.24.0 allows remote attackers to exhaust server memory via crafted zlib-compressed payloads in the Python THeaderTransport layer. The flaw permits a small compressed request to decompress into an excessively large memory allocation, causing service disruption. No public exploit code or active exploitation is known, and the vulnerability is rated important by the Apache project.

Technical ContextAI

Apache Thrift is a cross-language RPC and serialization framework widely used in distributed systems. The THeaderTransport component in the Python bindings adds a header-based framing layer that optionally compresses payloads using zlib. The vulnerability, stemming from unbounded decompression (CWE-409: Improper Handling of Highly Compressed Data), allows a tiny compressed input to expand to arbitrary size because the Python implementation fails to enforce a maximum decompressed length. This can overwhelm the memory allocation on the server.

RemediationAI

Upgrade to Apache Thrift 0.24.0, which fixes the unbounded decompression. If immediate upgrade is not feasible, disable tHeaderTransport or zlib compression in Python Thrift services, or enforce request size limits at the application layer. Reference advisory at https://seclists.org/oss-sec/2026/q3/260.

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Vendor StatusVendor

SUSE

Severity: Important
Product Status
openSUSE Tumbleweed Fixed

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CVE-2026-41608 vulnerability details – vuln.today
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